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S/M No. :  DSD9280M01

✔ 

Caution : 

In this Manual, some parts can be changed for improving, their
performance without notice in the parts list. So, if you need the
latest parts information,please refer to PPL(Parts Price List) in
Service Information Center (http://svc.dwe.co.kr).

DAEWOO ELECTRONICS Corp.

Mar. 2004

http : //svc.dwe.co.kr

Service Manual

Digital Satellite Receiver

MODEL :

DSD-9280M

1

2

3

4

5

6

7

8

9

MENU

INFO

0

/SA

T

EXIT

PR

OK

PR

EPG

   /AUD

RCL

TV/RADIO

Содержание DSD-9280M

Страница 1: ...parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr DAEWOO ELECTRONICS Corp Mar 2004 http svc dwe co kr Servic...

Страница 2: ...GENERAL INFORMATION 2 CIRCUIT OPERATION MANUAL 7 FIXING ERRORS 28 BOM LIST 34 SCHEMATIC DIAGRAM 39 PARTS PLACEMENT ARRANGEMENT 46 1 CONTENTS...

Страница 3: ...hannel editing function on Channel Management favorite move lock rename delete and sort User programmable Satellite Transponder information Automatic search for newly added transponder NIT search Stor...

Страница 4: ...from the mains you have to unplug the mains UNPACKING 1 x Remote Control Unit RCU 1 x RCA Cable 2 x AAA battery option 1 x Instruction Manual 1 x DSR GENERAL OPERATION Throughout this manual you will...

Страница 5: ...o watch Change channel or moves to the next higher or lower item in the menu Adjusts the volume or moves to the left or right item in the menu Shows information of the current channel Calls up the EPG...

Страница 6: ...R PANEL 100 240V Power Input Reset the STB Connect to TV and VCR using a SCART cable Connect Video to a TV using RCA jack Connect Audio L R to TV or Audio device Serial Connect to a PC for S W upgrade...

Страница 7: ...ain Profile Main Level Resolution 720 x 576 pixels for PAL Aspect ratio 4 3 or 16 9 Audio format MPEG Layer I and II Channel Mode Stereo Mono Mode Audio Signal Sample Rate 32 44 1 48 Ksps Audio Signal...

Страница 8: ...E BLOCK DIAGRAM DSD 9280M Block Diagram CPU STi5518 AUDIO D A FLASH ROM 16Mbit SDRAM 64Mbit Television Satellite dish TUNER A D 6bit DUAL LINK IC QPSK FEC TV SCART RCA RS 232 PORT VIDEO AUDIO FRONT SM...

Страница 9: ...ere used for the REMOCON signal Following is the Timing Diagram for the MITSUBISH signal format The signals are made up of Leader Code Custom Code 8bit Separator and Data Code 8bit Following is the va...

Страница 10: ...unction Hex Custom code 0x16 0x1C Power 0x15 INF0 0x21 Mute 0x12 PR 0x17 1 0x01 PR 0x18 2 0x02 0x14 3 0x03 0x13 4 0x04 OK 0x11 5 0x05 EXIT 0x23 6 0x06 0x1D 7 0x07 EPG 0x24 8 0x08 PAUSE 0x1E 9 0x09 Aud...

Страница 11: ...ories 4 Banks Able to use Hardware DMUX input Serial and to support 32Pid Boosting 8 Level INT Supporting DMA and other multi PID 2 MPEG DMAs Serial IEEE 1394 Hardware transport strearn demux 2 Kbytes...

Страница 12: ...f this value is not appropriate the colors are not be seen on the screen or the screen will display broken features 4 PIO Structure Sti5518 supports PIO that back up 5 number of Ports 8bit as of PIO0...

Страница 13: ...data Latch data Transmit data Feature 7 I2 C Timing Chart 3 PIO Map PIO NAME I O Function Remarks PIO1_0 I2C_Data SSC0 I O PIO1_2 I2C_Clk O PIO1_3 NOTPGM_EN O L Flash program enable PIO1_4 SLOW_S W I...

Страница 14: ...n in High status and Key Scan Trigger IN PIO3_6 Trigger OUT PIO3_7 Used when debugging with DCU Tool REMOCON_IN PIO4_6 Recognize the REMOCON signal being sent from IR Sensor 5 Memory Interface Sti5518...

Страница 15: ...Kbyte SRAM Not available Memory Map The size of EMI Bus is 16bit and also support for the 8bit Bus The Bank0 of EMI can support DRAM Interface while rest of Bank as of Bank1 2 and 3 can only support S...

Страница 16: ...ce Clock high to Strobe Valid 8 0 0 0 ns tRCA CH Read Data valid to Reference Clock high 13 0 ns tCHRDX Read Data hold after Reference Clock high 2 0 ns tSVRDX Read Data hold after Strobe valid 0 0 ns...

Страница 17: ...16 CIRCUIT OPERATING MANUAL EMI Interface Timing...

Страница 18: ...Demodulator are combined into one Module Following feature shows the Block Diagram 2 WIRE BUS CONTROL Direct conversion ZIF Tuner 4MHz 4MHz TDA8260 INSIDE LPF Matched Filter Matched Filter 2 wire bus...

Страница 19: ...R INPUT OF LNB A 2 NC 3 5V RF 5V OF RF AMP 20mA TYP 20mVp p 4 AGC AGC MONITORING 5 5V 5V OF 2 nd AMP ZERO IF IC 20mA TYP 20mVp p 6 GND 7 VT TUNING VOLTAGE 30V 20mVp p 8 I I SIGNAL MONITORING 9 Q Q SIG...

Страница 20: ...ith LNB 1 LNB power and 22khz Tone Pulse The power supplied to LNB sends the 22Khz Tone signal that is used in horizontal 18V vertical 13V and frequency Band and Diseqc Command Chart 6 LNB Control sig...

Страница 21: ...rts Interlace mode or Non interlace mode There are 6 Pins for the Analogue Video output CVBS S VHS Y C RGB Moreover it supports Teletext closed captions and CGMS Following picture shows the signal for...

Страница 22: ...0 0 00 0 000 White Yellow Cyan Green Magenta Red Blue Block 400 388 316 284 238 204 152 BLACK BLANK WHITE LEVEL LEVEL SYNC IFVFI Color Burst 10 Cycles Maintain 300mV Maintain 300mV White Yellow Cyan G...

Страница 23: ...g Function Chart 70 TV VCR SCART Connector Pin SCART CONNENTOR Following Table shows the Scart Connector Can select either TV AV mode or 16 9 4 3 mode Slow Blanking TV AV Selecting TV AV mode of TV SE...

Страница 24: ...ms CS4331 Crystal UDA1330 Philips Following diagram shows Timing Diagram with Audio DAC and Philips UDA1330 Block 2 Audio Pin Name Description Singnal Level Impedance 1 2 3 4 5 6 7 8 9 10 11 12 13 14...

Страница 25: ...2 3 14 15 16 L_ch L_ch R_ch R_ch t o t o LRCIN pin 1 BCKIN pin 3 AUDIO DATA WORD 16 BIT DIN pin 2 PCM Timing Analogue Audio Signals that are modified at Audio DAC are amplified by three times after go...

Страница 26: ...read write by PC 2 sign is displayed in Front Panel Check whether the User Data is being loaded to Main RAM from the Flash ROM Check the validity of Data Following Booting Message will be seen after e...

Страница 27: ...r Initial TUNER Module Initialization Creating TUNER module semaphores module_type 148 Successfully Installed TUNER module 5 MPEG SDRAM configuration MPEG SDRAM configuration Video Bit Buffer Size 400...

Страница 28: ...serivce_num 0 LOAD POSt parsing process start LOAD POSt parsing process start LOAD POSt parsing process start LOAD POSt parsing process start LOAD POSt parsing process start Last Channel didn t save b...

Страница 29: ...rcuit Oscillating 27Mhz clock Flash Cs output status Check CPU power STi5518 Pin27 High Check ROM Booting Mode Check Wait Signal STi5518 Pin131 Low Eliminate the problems Replacing STI5518 BUS Interfa...

Страница 30: ...G ERRORS 2 Operation error after the BOOT signal Is the Operation of 12C_Data 12C_CIK normal Check 12C related parts STI5518 Tuner Replacing STI 5518 NO NO YES YES YES YES Memwait High Interrupt IRQ 0...

Страница 31: ...ol LNBP output OK IC27 PIN3 Eliminate problem causing factors Replace LNBP Check the power of LNB 13V 18V 12C Line Check Reset Check Check Locking Voltage 1 16V Tuner PIN 13 near TP Replace Tuner B Ch...

Страница 32: ...he problem Check Error Pin Whether the output is in High Status Replace Tuner B Tuner interface Signal check TS_Data F_packet_clk F_strt F_B_clk Fix the problem Pts Crystal Check C Stream Input Signal...

Страница 33: ...put Signal PCM Data SCLK LRCLK PCMCLK YES NO YES NO NO Check the STi 5518 Check the Interface OF Audio AMP IC Replace STi5518 Replace Audio DAC Eliminate problems Replace Audio AMP Audio AMP Check Aud...

Страница 34: ...process Check the power status of Sit5518 Video Pin 23 Pin30 Check Related Circuits and execute the fixing process Replace STi5518 I V Ref Check STi5518 Pin28 29 Pin35 36 Verify the resistance value a...

Страница 35: ...10 DSF24G DIODE SF24G D812 DSF24G DIODE SF24G D813 DSR306 DIODESCHOTTKY SR306 D814 DSR306 DIODESCHOTTKY SR306 H700 1356VF2A ICPREAMP 356VF2A38KHZRA H701 4858900002 HOLDERLEDASSY LH 3P IC100 1KA317 ICR...

Страница 36: ...AUTO Q802 TZTC3203Y TR KTC3203Y 2120Y Q806 TZTC3205Y TR KTC3205Y 2236Y Q807 TZSR1004 TR KSR1004 AUTO Q808 TZTC3205Y TR KTC3205Y 2236Y LOC PARTS_CODE PARTS_NAME PARTS_DESCR REMARK Q809 TZTC3205Y TR KT...

Страница 37: ...5801065GY WIRECOPPER AWG221 0 65TINCOATING JP44 85801065GY WIRECOPPER AWG221 0 65TINCOATING JP45 85801065GY WIRECOPPER AWG221 0 65TINCOATING JP46 85801065GY WIRECOPPER AWG221 0 65TINCOATING LOC PARTS_...

Страница 38: ...S_CODE PARTS_NAME PARTS_DESCR REMARK R814 RD AZ470J RCARBONFILM 1 647OHMJ R815 RD AZ222J RCARBONFILM 1 62 2KOHMJ R816 RD AZ102J RCARBONFILM 1 61KOHMJ R817 RD AZ102J RCARBONFILM 1 61KOHMJ R818 RD 4Z241...

Страница 39: ...HMJ1608 RC34 HRFS101JBA RCHIP 1 16 100OHMJ1608 RC35 HRFS101JBA RCHIP 1 16 100OHMJ1608 RC36 HRFS560JBA RCHIP 1 16 56OHMJ1608 LOC PARTS_CODE PARTS_NAME PARTS_DESCR REMARK RC37 HRFS103JBA RCHIP 1 16 10KO...

Страница 40: ...39 SCHEMATIC DIAGRAM...

Страница 41: ...40 SCHEMATIC DIAGRAM...

Страница 42: ...41 SCHEMATIC DIAGRAM...

Страница 43: ...42 SCHEMATIC DIAGRAM...

Страница 44: ...43 SCHEMATIC DIAGRAM...

Страница 45: ...44 SCHEMATIC DIAGRAM...

Страница 46: ...45 SCHEMATIC DIAGRAM...

Страница 47: ...46 PARTS PLACEMENT ARRANGEMENT...

Страница 48: ...47 PARTS PLACEMENT ARRANGEMENT...

Страница 49: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp...

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